As an example of Today's Word, gadzookery, "wight" is
said to mean "brave". I couldn't find that definition:
Webster's 1913 Dictionary 
  
  Definition:   \Wight\, n.
Weight. [Obs.]
\Wight\, n. [OE. wight, wiht, a wight, a whit, AS. wiht,
wuht, a creature, a thing; akin to D. wicht a child, OS. &
OHG. wiht a creature, thing, G. wicht a creature, Icel.
v[ae]tt? a wight, v[ae]tt? a whit, Goth. wa['i]hts, wa['i]ht,
thing; cf. Russ. veshche a thing. ?. Cf. {Whit}.]
1. A whit; a bit; a jot. [Obs.]
         She was fallen asleep a little wight. --Chaucer.
2. A supernatural being. [Obs.] --Chaucer.
3. A human being; a person, either male or female; -- now
   used chiefly in irony or burlesque, or in humorous
   language. ``Worst of all wightes.'' --Chaucer.
         Every wight that hath discretion.     --Chaucer.
         Oh, say me true if thou wert mortal wight. --Milton.
\Wight\, a. [OE. wight, wiht, probably of Scand. origin;
cf. Icel. v[=i]gr in fighting condition, neut. v[=i]gh ???
v[=i]g war, akin to AS. w[=i]g See {Vanquish}.]
Swift; nimble; agile; strong and active. [Obs. or Poetic]
      'T is full wight, God wot, as is a roe.  --Chaucer.
      He was so wimble and so wight.           --Spenser.
      They were Night and Day, and Day and Night, Pilgrims
      wight with steps forthright.             --Emerson.